Emile peron



E. PIRON.

OVEN HEATING SYSTEM.

APPLICATION FILED JULY 20. 1918.

Patented June 10, 1919.

EMILE PIRON, OF NEW YORK, N. Y.

OVEN-HEATING- SYSTEM.

Specification of Letters Patent.

Application filed July 20, 1918. Serial No. 245,909.

To all whom it may concern:

Be it known that I, EMILE PraoN, a subject of the King of Belgium, residing at New York city, in the county of New York, State of New York, have invented certain new and useful Improvements in Oven- Heating Systems.

The present invention relates to improvements in heating arrangel'nents for ovens or other receptacles in which materials to be heated are placed, such as coke ovens, kilns or the like.

One of the objects of my invention is to provide a heating system that will be of the continuous regenerating type and which will be very e'liicient and at the same time, simple in construction.

Another object of my invention is to provioe a heating system in which all of the passages will be relatively direct and accessible and the walls subjected to a minimum of the inequality of heating which is the ca use of destruction of the walls in ovens a 1131 1 al ly constructed.

llirh these and other objects in view my lllX'OJllllul) consists oi" the novel arrangement oi oarts herein described and pointed out in.t-. appended claims.

In the drawings, Figure 1 is a horizontal cross-section through a portion of a battery of" Colic ovens, which 1 have adopted for purpose of illustration, the section being taken on the line 1-1 of Fig. 2.

F 2 is a vertical cross-section of a portion oi' the battery taken on the line 2-2 of Fig. 4.

Fig. 3 is a vertical cross-section taken on the line 3-3 of Fig.

Fig. 4- is a vertiuil cross-section taken on tho lino 4.4 of Fig. 3.

'i hc correspmiding parts are referred to both in the drawings and in the specification by similar ictercnce characters.

For purpose of illustration, 1 have shown a portion oi two of a battery of ovens, such as are used in producing coke or the like.-

The ovens 10 are shown disposed horizontally and are closed at the front by the (floors 11. Between the ovens 1.0 are located a series of vertically disposed combustion chambers 12, at the top of each of which is a burner outlet 13 which communicates through the pipe 14 ith any suitable source of supply of fuel, which in this instance is gas.

Below each of the ovens 10 is a series of chamber and the oven.

vertical waste gas flues 15, each communicating with a common horizontal waste gas flue 16 which will be connected to a chimney or any, other suitable device for producing a draft. Between the lower part of each of the combustion chambers 12 and the flues 15 is an outlet 17.

Between each pair of combustion chamhers 12 is placed an air duct 18 which, as shown best in Fig. 4, is relatively narrow until it reaches the bottom of the combustion chambers 12, when it expands into a wider portion which communicates at the bottom with a horizontal air inlet duct 19. As shown in l ig. 4, the walls of the air ducts 18 do not connect at the top with the upper portion of the oven walls but are separated therefrom sufliciently to provide communication between the ducts l8 and the heating chamber 12. The wall above them is preferably curved as shown.

In operation, gas is supplied through the openings 14 and ignited in the combustion chambers'12. Air from the outside passes through the air inlet ducts 19 into the air ducts 18 and is mixed with the incoming gas at the burner openings to be burned in the combustion chambers 12. The hot gases from these chambers pass through the openings 17 into the waste gas flues 15 and from thence to the stack through the horizontal lines 16. The heat from the combustion chambers 12 passes through the side walls into the oven space 10 and the air supplied by the air ducts 18 is heated as it passes the walls of the waste gas flues 15, and also between the walls of the combustion chambers 12. This serves as a continuous regeneration, because the temperature of the air is raised as it passes upward from the inlet duct 19 to the burner opening by reason of the heat which it receives from the waste gas lines 15 and also from the combustion chambers 12.

provide the air ducts 18 between each pair of combustion chambers not only as a ready means for supplying air to the burner,

Patented June 10, 1919.

but also to equalize the heating of the walls sin-rounding each of the combustion cham-- hers 12. If the air ducts 18 were not placed between the combustion. chambers, it is ob vious that the wall between these chambers would receive and retain much more heat than the walls between the combustion The wall between the combustion chamber and the oven is, of

course, kept somewhat cool by reason of the passage of. the heat into the oven space,

. a1r carried through this space as part of my regeneration system, I also avoid any waste of heat which may escape from the combustion chambers in this cooling of the walls. In order that a system of continuous regeneration shall be eflicient, it is essential that the incoming air shall be in contact for a long time with the wall heated by the waste gases. To this end, I make the waste gas flues high and narrow and vertical and similarly, I make the air ducts vertical and narrow. It will be seen. that, by this arrangement, I provide a wall of large area on opposite sides of which the hot waste gases and the incoming air are flowing in opposite directions, so that substantially all of the heat from the waste gases may be transferred to the incoming air.

By the arrangement which I have described, I have provided a simple and effective arrangement which can be constructed readily and which avoids the use of complicated arches and brickwork and which can be duplicated indefinitely to produce a compact arrangement of a battery of ovens working at high efficiency by continuous regeneration, thus avoiding the reversal of gas and air supply necessary when checker-work is used to absorb the heat. All complicated and unaccessible passages which are liable to become clogged are avoided and especially all; passages for gas which are subjected to heat before the gas is ignited are avoided.

By providing the downwardly directed passages between the combustion chambers and the air ducts, I cause the heated air to enter the combustion chamber in a downwardly direction at the mouth of the burner. This causes the gas and the air to be mixed thoroughly as they enter the combustion chamber, thus preventing the formation of soot which is liable to occur if the air is injected into the chamber below the mouth of the burner.

By locating the waste gas flues so that their tops are adjacent the bottom of the oven, I insure the correct heating of that part of the oven so that the coking can proceed at that point at substantially the same rate as in other portions of the oven.

It will be understood that while my arrangement is particularly adapted for use I with coke ovens, it is by no means limited to such uses. My arrangement may be used for I heating any space.

1. A horizontal oven, a series of vertical waste gas flues beneath and adjacent the bottom of the oven and extending parallel with the axis thereof, the waste gas flues being relatively high and narrow in cross-section,

ing downwardly adjacent the wall of the waste gas flues, each air duct being relatively high and narrow in cross-section and coi'mnunicating with the upper end of one of the combustion chambers adjacent the burner therein.

2..A horizontal oven, a series of vertical waste gas flues beneath and adjacent the bottom of the oven and extending with the axis thereof, the waste gas flues being relatively high "and narrow in crosssection, a series of vertical combustion chambers adjacent the side wall of the oven and communicating at the bottom with the tops of the waste gas flues,.a burner at the upper end of each combustion chamber, a series of vertical air ducts, each having its upper portion located between a pair of the combustion chambers and its lower portion extending downwardly adjacent the wall of the waste gas flues, each air duct being relatively high and narrow in cross-section, and connnunicating passages between the upper end of each air duct and the upper end of one of the combustion chambers, the communicating passages being constructed and arranged to direct the air into the combustion chamber in a downwardly direction from a point not lower than the mouth of the burner.

E. PIRON.

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